Optical element driving mechanism

Abstract

An optical element driving mechanism is provided. The optical element driving mechanism includes a fixed portion, a movable portion, a driving assembly, and a circuit unit. The movable portion is movably connected to the fixed portion, and holds an optical element. The driving assembly drives the movable portion to move relative to the fixed portion. The circuit unit includes a base, a plate-connecting portion, and a layer-connecting portion. The plate-connecting portion is partially embedded in the base. The layer-connecting portion is disposed on the base. The driving assembly is electrically connected to the layer-connecting portion. The thickness of the plate-connecting portion is different from the thickness of the layer-connecting portion.

What is claimed is: 
     
       1. An optical element driving mechanism, comprising:
 a fixed portion; 
 a movable portion, movably connected to the fixed portion, and carrying an optical element; 
 a driving assembly for driving the movable portion to move relative to the fixed portion; and 
 a circuit unit, comprising:
 a base, wherein the base has a first surface and a second surface, and the first surface and the second surface are located on different planes; 
 a plate-connecting portion partially embedded in the base; and 
 a layer-connecting portion disposed on the first surface and the second surface, wherein the driving assembly is electrically connected to the layer-connecting portion, and the thickness of the plate-connecting portion is different from the thickness of the layer-connecting portion. 
 
 
     
     
       2. The optical element driving mechanism as claimed in  claim 1 , wherein the driving assembly is electrically connected to the plate-connecting portion. 
     
     
       3. The optical element driving mechanism as claimed in  claim 1 , further comprising an electric component, wherein the plate-connecting portion is electrically connected to the electric component. 
     
     
       4. The optical element driving mechanism as claimed in  claim 1 , wherein the driving assembly further comprises a magnetic element, and the magnetic element overlaps the plate-connecting portion. 
     
     
       5. The optical element driving mechanism as claimed in  claim 1 , wherein the plate-connecting portion is completely embedded in the base. 
     
     
       6. The optical element driving mechanism as claimed in  claim 1 , further comprising a circuit board disposed on the circuit unit, wherein the circuit board is electrically connected to the circuit unit. 
     
     
       7. The optical element driving mechanism as claimed in  claim 1 , further comprising a metallic circuit embedded in the movable portion. 
     
     
       8. An optical element driving mechanism, comprising:
 a fixed portion; 
 a movable portion, movably connected to the fixed portion, and carrying an optical element; 
 a driving assembly for driving the movable portion to move relative to the fixed portion; and 
 a circuit unit, comprising:
 a base, wherein the base has a first portion and a second portion, and the thickness of the first portion is greater than the thickness of the second portion; 
 a plate-connecting portion partially embedded in the base, wherein the plate-connecting portion is disposed in the first portion; and 
 a layer-connecting portion disposed on the base, wherein the driving assembly is electrically connected to the layer-connecting portion, and the thickness of the plate-connecting portion is different from the thickness of the layer-connecting portion. 
 
 
     
     
       9. The optical element driving mechanism as claimed in  claim 8 , further comprising a sensing element for detecting the movement of the movable portion relative to the fixed portion, wherein the sensing element is disposed on the first portion. 
     
     
       10. An optical element driving mechanism, comprising:
 a fixed portion; 
 a movable portion, movably connected to the fixed portion, and carrying an optical element; 
 a driving assembly for driving the movable portion to move relative to the fixed portion; and 
 a circuit unit, comprising:
 a base; 
 a plate-connecting portion partially embedded in the base; and 
 a layer-connecting portion disposed on the base, wherein the driving assembly is electrically connected to the layer-connecting portion, and the thickness of the plate-connecting portion is different from the thickness of the layer-connecting portion, 
 
 wherein the plate-connecting portion is electrically isolated from the layer-connecting portion. 
 
     
     
       11. The optical element driving mechanism as claimed in  claim 10 , wherein the fixed portion further comprises a housing, and the plate-connecting portion is affixed to the housing. 
     
     
       12. An optical element driving mechanism, comprising:
 a fixed portion; 
 a movable portion, movably connected to the fixed portion, and carrying an optical element; 
 a driving assembly for driving the movable portion to move relative to the fixed portion; and 
 a circuit unit, comprising:
 a base; 
 a plate-connecting portion partially embedded in the base, wherein the plate-connecting portion is partially exposed from the base and extends out of the base; and 
 a layer-connecting portion disposed on the base, wherein the driving assembly is electrically connected to the layer-connecting portion, and the thickness of the plate-connecting portion is different from the thickness of the layer-connecting portion. 
 
 
     
     
       13. The optical element driving mechanism as claimed in  claim 12 , further comprising a sensing element for detecting the movement of the movable portion relative to the fixed portion, wherein the sensing element is disposed on one side of the base, and the plate-connecting portion is exposed on another side of the base. 
     
     
       14. The optical element driving mechanism as claimed in  claim 12 , further comprising a sensing element for detecting the movement of the movable portion relative to the fixed portion, wherein the sensing element is disposed on one side of the base, and the plate-connecting portion is exposed on the same side of the base. 
     
     
       15. An optical element driving mechanism, comprising:
 a fixed portion; 
 a movable portion, movably connected to the fixed portion, and carrying an optical element; 
 a driving assembly for driving the movable portion to move relative to the fixed portion; and 
 a circuit unit, comprising:
 a base; 
 a plurality of plate-connecting portions partially embedded in the base, wherein the plate-connecting portions are electrically isolated from each other; and 
 a layer-connecting portion disposed on the base, wherein the driving assembly is electrically connected to the layer-connecting portion, and the thickness of the plate-connecting portion is different from the thickness of the layer-connecting portion. 
 
 
     
     
       16. The optical element driving mechanism as claimed in  claim 15 , wherein the plate-connecting portions extend out of the base in different directions, and the directions are substantially perpendicular to each other. 
     
     
       17. An optical element driving mechanism, comprising:
 a fixed portion; 
 a movable portion, movably connected to the fixed portion, and carrying an optical element; 
 a driving assembly for driving the movable portion to move relative to the fixed portion; and 
 a circuit unit, comprising:
 a base; 
 a plate-connecting portion partially embedded in the base, wherein the driving assembly is electrically isolated from the plate-connecting portion; and 
 a layer-connecting portion disposed on the base, wherein the driving assembly is electrically connected to the layer-connecting portion, and the thickness of the plate-connecting portion is different from the thickness of the layer-connecting portion. 
 
 
     
     
       18. An optical element driving mechanism, comprising:
 a fixed portion; 
 a movable portion, movably connected to the fixed portion, and carrying an optical element, wherein the movable portion comprises a carrier and an elastic element, the carrier is movably connected to the fixed portion via the elastic element; 
 a driving assembly for driving the movable portion to move relative to the fixed portion; and 
 a circuit unit, electrically connected to the driving assembly via the elastic element, comprising:
 a base; 
 a plate-connecting portion partially embedded in the base; and 
 a layer-connecting portion disposed on the base, wherein the driving assembly is electrically connected to the layer-connecting portion, and the thickness of the plate-connecting portion is different from the thickness of the layer-connecting portion. 
 
 
     
     
       19. An optical element driving mechanism, comprising:
 a fixed portion; 
 a movable portion, movably connected to the fixed portion, and carrying an optical element; 
 a driving assembly for driving the movable portion to move relative to the fixed portion; and 
 a circuit unit, comprising:
 a base; 
 a plate-connecting portion partially embedded in the base, wherein the plate-connecting portion abuts an image-sensing element, and the image-sensing element detects light passing through the optical element; and 
 a layer-connecting portion disposed on the base, wherein the driving assembly is electrically connected to the layer-connecting portion, and the thickness of the plate-connecting portion is different from the thickness of the layer-connecting portion.